* WHAT...For the first Heat Advisory, heat index values up to 108. For the second Heat Advisory, heat index values up to 109 expected.
* WHERE...Portions of East Arkansas, North Mississippi, Southeast Missouri, and West Tennessee.
* WHEN...For the first Heat Advisory, until 8 PM CDT this evening. For the second Heat Advisory, from 11 AM to 8 PM CDT Tuesday.
* IMPACTS...Hot temperatures and high humidity may cause heat illnesses.